4499920 has 20 divisors (see below), whose sum is σ = 10462500. Its totient is φ = 1799936.

The previous prime is 4499893. The next prime is 4499923. The reversal of 4499920 is 299944.

It can be written as a sum of positive squares in 2 ways, for example, as 3069504 + 1430416 = 1752^2 + 1196^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 4499920.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4499923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28045 + ... + 28204.

It is an arithmetic number, because the mean of its divisors is an integer number (523125).

Almost surely, 2^4499920 is an apocalyptic number.

4499920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4499920 is an abundant number, since it is smaller than the sum of its proper divisors (5962580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4499920 is a wasteful number, since it uses less digits than its factorization.

4499920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56262 (or 56256 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 4499920 is about 2121.3014872950. The cubic root of 4499920 is about 165.0953840901.

The spelling of 4499920 in words is "four million, four hundred ninety-nine thousand, nine hundred twenty".